I was looking at building an electromagnet that would have a constant 12VDC that would allow a permanent magnet to stick the core, but I want to be able to send a "surge pulse" that would drive the magnet away.
The permanent magnet and electro would have the same poles facing each other, the electro would not have enough current to repel until the surge came through. Also, I would need to be able to send the surge between 600 and 15,000 times/minute.
Is this possible and how would I find the equipment to build or buy something that is already built
Thanks,
Shane